ROBUST F HDPM Users manual for frontloader - Stoll

Users manual for frontloaderROBUST F HDPM3311991 b EnglischP 1360

STOLL ROBUST F HDPMTable of contentspage1. Before operating 32. General safety information and prevention of accidents 52.1 Safety decal (=> 2007) 122.2 Safety decal (2007 =>) 133. Technical data ROBUST Fxx HDPM 154. Description 165. Practical Application 185.1 Operation 185.1.1 Adesivi (=> 2007) 195.1.2 Adesivi (2007 =>) 205.2 Hydraulic system 215.3 Attaching of drive-in loader unit (figs. LHO1002A and LHO1003A) 225.4 Removal of the drive-in front loader (Figs. LWP1076A and LHO1007A) 245.5 Mechanical single lever control unit SLV (option available) 275.5.1 Type 275.5.2 Definition of working directions 285.5.3 Definition of actuating directions 285.5.4 Additional functions joystick buttons 295.6 Quick installation and removal of attachments 305.7 Hydraulic implement control 315.8 Hydraulic diagramm HDPM 345.9 Mechanical parallel motion 355.10 3rd and 4th control circuit 365.11 Hydraulic diagramm HDPM 375.12 Hydraulic diagramm 3rd and 4th control circuit 385.13 Electrical Equipment HDPM 395.13.1 HDPM with 3rd and 4th control wiring 395.13.2 HDPM with 3rd and 4th control wiring 406. Ballasting the tractor during front loader operation 417. Service and maintenance 428. Safety and Prevention of Accidents 458.1 Driving on public roads 458.2 Allowed maximun load capacity of pallet fork tines 468.3 Comfort - Drive 469. Decalcomania 489.1 Decalcomania frontend loader Robust F "right" 489.2 Decalcomania frontend loader Robust F "left" 499.3 Decalcomania frontend loader Robust F "right" 509.4 Decalcomania frontend loader Robust F "left" 5110. Troubleshooting 5211 EC-Declaration of Conformity 532

1. Before operatingPrior to operating frontend loaderplease read and observe theoperator's manual and all safetyinstructions!In this operating instruction booklet we havemarked all paragraphs which refer to yoursafety with this sign.Pass on all safety advices also to other users.Operation in accordance withspecifications!The STOLL frontend loader is built solelyfor normal agricultural use (operated inaccordance with specifications).It may only be operated with toolsespecially provided by STOLL for thispurpose.It may only be attached to field tractors andother tractive machines for which it isdesigned and offered by STOLL (intendeduse).Use of frontend loader Robust F for anyother purpose tan defined above isconsidered as operation which is not inaccordance with specifications and isundertaken as such at the owner's risk.Observation of operation and maintenanceinstructions specified by manufacturer shallalso be taken to the part of operation inaccordance with specifications.The frontend loader Robust F may only beoperated, serviced and repaired by personnelwho are familiar with these functions and whohave been instructed of the inherent dangers.3

-- ▲ -- DANGER -- ▲ --It is forbidden to approach within reach ofthis machinery while in use.All relevant accident prevention, safety,health and street regulations must beobserved according general or localregulations of user country.-- ▲ -- CAUTION -- ▲ --STOLL must regretfully declineresponsibility for damage resulting fromunauthorised changes to loader orequipment and any misuse.Tightening torque for screwsclassclassscrews 8.8 10.9 screws8.8 10.9Nm (lb-ft) Nm (lb-ft)Nm (lb-ft) Nm (lb-ft)M8 23 (17) 33 (24) M20 380 (280) 530 (391)M8x1 25 (18) 35 (26) M20x2 400 (295) 560 (413)M10 46 (34) 65 (48) M20x1,5 420 (310) 590 (435)M10x1,25 49 (36) 69 (51) M22 510 (376) 720 (531)M12 80 (59) 110 (81) M22x2 540 (398) 750 (553)M12x1,5 84 (62) 118 (87) M22x1,5 560 (413) 790 (582)M12x1,25 88 (65) 123 (91) M24 630 (464) 890 (656)M14 130 (96) 180 (133) M24x2 680 (501) 950 (700)M14x1,5 138 (102) 190 (140) M27 930 (686) 1310 (966)M16 190 (140) 270 (199) M27x2 995 (733) 1400 (1032)M16x1,5 210 (155) 290 (214) M30 1260 (929) 1770 (1305)M18 270 (199) 380 (280) M30x2 1370 (1010) 1930 (1423)M18x2 280 (206) 400 (295)M18x1,5 300 (221) 420 (310) 5/8“UNC (normal) 175 (129) 245 (180)5/8“UNF (fine) 200 (147) 280 (206)3/4"UNC (normal) 380 (280) 530 (391)3/4"UNF (fine) 420 (310) 590 (435)4

2. General safety information andprevention of accidentsMost accidents which occur inagricultural enterprises are the result ofsafety rules being disregarded bypersonnel.Safety precautionsA careful operator is the best operator.Most accidents can be avoided byobserving certain precautions.To help prevent accidents, read and takethe following precautions before workingor operating with the frontloader orservicing it. Equipment should beoperated only by those who areresponsible and instructed to do so.Safety decal 3449070a has to be affixed indrivers visibility!Throughout this manual you willregognize text in italics, preceded by thewords NOTE, ATTENTION, IMPORTANT,CAUTION, WARNING or DANGER.Such text has the following significance:Machine safety-- ! -- NOTE -- ! --This text stresses a correct operatingtechnique or procedure.-- ! -- ATTENTION -- ! --This text warns the operator of potentialmachine damage if a certain procedure isnot followed.-- ▲ -- IMPORTANT -- ▲ --This text informs the reader of somethingthat he needs to know to prevent minormachine damage if a certain procedure isnot followed.5

Personal Safety-- ▲ -- CAUTION -- ▲ --The word CAUTION is used where a safebehavioural practice, according tooperating and maintenance instrucionsand common safety practices will protectthe operator and others from accidentinvolvement.-- ▲ -- WARNING -- ▲ --The word WARNING denotes a potentialor hidden hazard which could possiblycause serious injury. It is used to warnoperators and others to exercise duecare and attention to avoid a surpriseaccident with machinery.-- ▲ -- DANGER -- ▲ --The word DANGER denotes a forbiddenpractice in connection with a serioushazard.Failure to follow the CAUTION, WARNINGand DANGER instructions may result inserious bodily injury or even death.-- ▲ -- CAUTION -- ▲ --1. Front loaders may only be attached totractors equipped with a lockablehydraulic system, otherwise it becomesnecessary to install a shut-off valve.-- ▲ -- CAUTION -- ▲ --2. The hydraulic system must be lockedduring travel on public roads and whilethe tractor is parked.6

-- ▲ -- DANGER -- ▲ --3. Never convey or raise people in abucket or other attachment!-- ▲ -- CAUTION -- ▲ --4. The maximum roadspeed withattached load beam is 25 km/h, themaximum working speed is 10 km/h.Check front tyres for correct loaderoperation air pressures according tractoruser manual !-- ▲ -- DANGER -- ▲ --5. Never carry out repair, cleaning orlubricating jobs with raised load beam!Lower or remove beam. Lower load beamafter completion of work.7

-- ! -- ATTENTION -- ! --6. Never drive the tractor off with a jerk ifthe attachment is fully loaden or in itshighest position. Drive downhill whenpushing together or collecting material,whenever possible load in a trough or dip;never drive across a gradient with raisedload beam; increase rear track width of thetractor as necessary and never drive with anarrower then standard front track width,even with tractors equipped with anadjustable width front axle.-- ! -- ATTENTION -- ! --7. Do not turn the tractors steering wheelwhen driving into the material to be loaded.-- ! -- ATTENTION -- ! --8. Operate the front loader only with its ownapproved attachments. Never carry out jobswith implements not designed for the work.The tool and the loader arm/loader unit mayonly be installed and removed by theoperator.-- ▲ -- DANGER -- ▲ --9. Lifting pallets or bales over the cabcreates an increased risk of the loadfalling onto the operator when the tractoris moving. The roll-over protectionstructure (ROP) can only ensure a partialprotection from objects falling onto thedriving position.8

Special tools such as pallet forks or balehandling tools are designed in a way thatprevents the load from falling down ontothe tractor.Stacking of bales is not allowed becauseof the risk that upper bales could falldown and injure persons.The tip angle of the tool for loaderwithout selfleveling (HD typ) or ifselfleveling is deactivated (HDP typespecial function) will be increase whenraising up the liftarm. The user has tocompensate this increase manually withjoystick to eleminate the risk of goodsfalling down and of injuring persons..-- ▲ -- DANGER -- ▲ --10. Sojourn within the working range(3m) is prohibited.Stay clear away of raised loader arms orunsecured loads.Please recognize and follow relevantmachine safety regulations for loaderwork according DIN EN 12525/A1:2006.9

-- ▲ -- DANGER -- ▲ --11. Travel with loaded bucket on publicstreets is prohibited!-- ▲ -- DANGER -- ▲ --12. Rules for prevention of accidentsissued by the professional associationsand organisations as well as theregulations applying to construction anduse of any legally prescribed protectivedevices must be observed at all times.For transport and travelling on publicroads local country street regulationshave to be maintained.-- ▲ -- CAUTION -- ▲ --13. Always store the loader on a solidarea and with the tool installed. Be surethe prop stands are locked in a safeposition.-- ▲ -- IMPORTANT -- ▲ --14. Good visibility is essential duringfrontloader operation (clean cabwindows; no risk of dazzling; sufficientlighting of the work area in the dark).-- ▲ -- DANGER -- ▲ --15. Ensure that the front loader is a safedistance away from overhead powerlines. Danger to life in case of contact!10

-- ▲ -- DANGER -- ▲ --16. Liquids leaking under high pressure(Diesel fuel, hydraulic oil) can penetratethe skin and cause severe injury. Wheninjured see a doctor immediately!Danger of infection!-- ▲ -- CAUTION -- ▲ --17. Before the first use of the loader andthen at least once a year all hoses mustbe checked by an expert worker for theiroperational safety and replaced ifrequired. The time of use of the hosesshould not exceed six years including amaximum storage time of two years. Thereplacement hoses and pipings mustmeet with the implement manufacturer'stechnical standards!-- ! -- ATTENTION -- ! --Installation Instruction!Hydraulic pipes (pipes and screwed joints)are ex works only unassembled pre -mounted.After final laying of pipes at the tractor allscrewed joints must be tightened andretightened after first 5 working hours.!-- ▲ -- CAUTION -- ▲ --18. When searching for leaks appropriateaids should be used because of thedanger of injury.-- ! -- ATTENTION -- ! --19. If there is installed any equipment at thetractor, which may interfere with loaderarm,tool or any attachement, it has to beremoved before executing loader work.11

2.1 Safety decal(=> 2007)3377500a-- ! -- ATTENTION -- ! --Danger of severe injury Only remove theloader if a tool is fitted-- ! -- ATTENTION -- ! --3377570aDanger in the working area!Do not allow anybody to come within themachine's working area, particularly ifthe equipment is raised.12

2.2 Safety decal(2007 =>)3310350a-- ! -- ATTENTION -- ! --Danger of severe injury Only remove theloader if a tool is fitted-- ! -- ATTENTION -- ! --3431550aDanger in the working areaDo not allow anybody to come within themachine's working area, particularly ifthe equipment is raised.13

-- ! -- ATTENTION -- ! --3430500aInstructions for HYDRO-FIX hydraulicconnectionsMethod to be used for connection andremoval of HYDRO-FIX devices.-- ▲ -- CAUTION -- ▲ --3430510aDanger from high pressure!Stop the engine and discharge residualpressure from the system.-- ! -- NOTE -- ! --3377220aLifting points - Connection points to beused when lifting the loader without fronttools-- ! -- ATTENTION -- ! --3375741bFunctions selectorSelect O = rapid unloadingSelect I = hydraulic 3rd service-- ! -- ATTENTION -- ! --3411720bControl for hydraulic selflevelling (onlyfor loader type HDP)-- ! -- ATTENTION -- ! --3343590aTool coupling controlSticker applied to the tool coupling bar;coupling is safewhen side “A” is level with the toolholder bush.14

4. DescriptionTHE RANGE OF "STOLL" FRONTLOADERS, SERIES "ROBUST F"Types 4 HDPM - 71 HDPM are DRIVE-INFRONT LOADERS, they are absolutelyuniform for all makes of tractor and consist of:The loader unit, completely assembled by themanufacturers, ready for installation (boomwith quick-change frame, hydraulic implementactuation, hydraulic rams, hydraulic lines,parking legs and drive-in pillars), tractorattachment components, front protection andvarious hook implements, mainly foragricultural and forestry use.Loader main components:Lifting armsImplement couplingImplementExplanation:Front loader type HDPM Hydraulicimplement actuation, double-acting tippingrams and mechanical parallel guidance.16

The liftarm are manufactured in a box sectionconstruction according to the principle of abeam with identical moment of resistance.A quick-change frame for the effortlessinstallation and removal of the implements ispart of the standard delivery range of theboom.The complete unit is secured to theattachment components by means of atensioning wedge.The parking support legs are required forinstallation and removal of the loader unit.Installation or removal can be accomplishedby one person without bodily effort in 2 to 4minutes.-- ! -- ATTENTION -- ! --You must have changed empty weight ofthe tractor registered by the relevantTechnical Control Board!As the front loader mounting parts are rigidlyfitted to the tractor, they involve a change ofthe tractor empty weight which is subject toregistration according to C.&U.R.It is therefore essential that the increasedempty weight of the tractor (without frontloader) is registered by the local authority inthe vehicle documents (registrationcertificate).17

5. Practical Application5.1 OperationGeneralThe usual tractor driver skill and apronounced empathy with the function of thefront loader suffice for first-class, fault-freeoperation. Good front loader work soonbecomes habit.Nearly all front loader jobs can be carried outin genuine one-man-operation.-- ▲ -- DANGER -- ▲ --Sojourn within the working range isprohibited.Stay clear away of raised unsecuredloads.(Machine safety >> DIN EN12525/A1:2006)Adequate space should be available forloading operations in the yard.In the field the front loader/tractor requireswell-supporting ground, in the yard a pavedsurface.-- ▲ -- CAUTION -- ▲ --The maximum roadspeed is 25 km/h, themaximum working speed during loadingwork with installed implements is 10km/h.18

-- ! -- ATTENTION -- ! --Do not turn the steering wheel whiledriving into the material to be loaded,rather drive-in straight ahead!Avoid too rapid lowering and especially rearrestinga load, which may result in shockloads being imposed onto the front axle.Beyond that, all accident preventionregulations laid down by the agriculturalinsurance association and the rules of theC.&U.R. must be complied with.5.1.1 Operation decal (=> 2007)19

5.1.2 Operation decal (2007=>)InstallationRemoval1. Unlock hand lever Attention! Do not remove the loaderunless a bucket or attachment is fitted.2. Drive tractor forward 1. Apply the tractor parking brake and lower theloader until it is resting on the ground.3.until the pins contact the glide rail jaw4.Stop the tractor and apply the parkingbrake.5.Relieve hydraulic system pressure (seetractor operators manual) and connect MultiQuick coupler and electrics.6. Raise the loader until the loader armretaining pins are fully registered in the jawAttention! Do not operate the bucket orattachment cylinders until the loader armsare securely locked.2. unlock the hand lever3. lower the parking stands4. Continue to lower the loader until the rearpins are resting on the glide rails.5. Disconnect theMultiQuick coupler andelectrical connections.7. Raise the loader and fold up the propstands8. move the hand lever downwards to thelocked position6. Reverse the tractor away from the loaderassembly.Attention! Check the tightness of thelocking mechanism at regular intervals,adjust if required.20

5.2 Hydraulic systemFront loaders may only be attached toagricultural tractors which are equipped witha lockable hydraulic control unit. Otherwise itbecomes necessary to provide a shut-offvalve between control unit and the hydraulicline, leading to the loader beam.-- ▲ -- CAUTION -- ▲ --When traveling on roads, doingmaintenance or when loader is detachedthe safety locking of control lever (Z) haveto be moved to the blocked position, orthe required hydraulic valve (shut-offvalve or Hydro-Fix) should be closed.21

5.3 Attaching of drive-in loader unit(figs. LHO1002A and LHO1003A)-- ▲ -- DANGER -- ▲ --The loader arm/loader unit may only beinstalled and removed by the opera tor.(Fig. LHO1002A)Unlatch gripping lever (1) and drive thetractor forward into the parked loader beam,until the pins (2) of the pillars contact thestop in the arresting hook. Brake the tractorin this position by applying the handbrake.Connect the hydraulic line by means of thecouplings (Fig. LHO1005A) resp. Hydro-Fix(Fig. LHO1004A).Connection hydraulic pipes with hydraulicflexible tubes:1 Loader arm lower2 Loader arm raise3 Implement scoop4 Implement dump22

(Fig.LHO1003A)Move control valve lever to position “Raise”,until the pins (2) contact the arresting hookscompletely at both sides. Lift the loaderbeam, until the bucket clears the groundcompletely. Use gripping lever to lock.Foldthe prop stands swiftly against the loaderarm and allow the locking cam to catch intothe slot of the prop stand.-- ! -- ATTENTION -- ! --After initial installation adjust locking device(see fig. LHO1003A) as follows: Loosen nut(4), adjust bolt (5) to ensure the tensioningprocess commences in position (b) of thegripping lever, which should be noticeablepre-loaded in position (c). Tighten locknut(4). Bleed the hydraulic rams by lifting andlowering the loader beam several times.The locking mechanism has to be checked ateach attachment and removal as well asoccasionally if the frontloader remainsmounted on the tractor for a longer period.Correct the setting if necessary.23

5.4 Removal of the drive-in front loader(Figs. LWP1076A and LHO1007A)-- ▲ -- DANGER -- ▲ --The loader arm/loader unit may only beinstalled and removed by the operator-- ▲ -- DANGER -- ▲ --Do not park loader beam without attachedbucket or other implement, otherwisedanger of tipping over!Lower balance beam without pressure up tothe ground.Unlock gripping handle (1) and fold propstands down onto the ground.Drive forward slightly, allow control unitthereby to remain in position “Lower” until thepins (2) glide out from the arresting hooksand lie on the glide path (A). (Driving forwardis omitted in the case of double-actinghydraulic rams, because the pins (2) will slipout of the arresting hook through theretraction of the hydraulic cylinders).Drive backwards until the prop standsengage and the pillar take off from the glideDisconnect the hydraulic lines at thecouplings (see fig. LHO1025A resp.LHO1026A) and at the electric cable. Fit dustcap and blanking plug. Drive tractor out.-- ▲ -- IMPORTANT -- ▲ --Loading and lightly raising the front loaderattachment as well as thorough lubrication ofthe glide path A (see fig. LHO1006A) willfacilitate loosening the tensioning wedge (seefig. LHO1003A).24

-- ▲ -- DANGER -- ▲ --When handling the prop stand there is adanger of injury by pinching. Keep handsclear of the area between prop stand andloaderFold up the prop stand until it is locked bythe rubber spring catch. Grease the rubberspring catches occasionally.When installing and removing the loader armfollow the instructions of the decal placed onthe loader arm pillar.Hydro-Fix-- ! -- ATTENTION -- ! --It is essential that the male and femaleconnectors of the Hydro-Fix hosecouplers are clean when the hoses arecoupled. Relieve all pressure from thehydraulic system before coupling thehoses. Damage to the seals could result ifthe hoses are coupled under pressure .26

5.5 Mechanical single lever control unit SLV(option available)Assembly instruction see A874-englishStoll-ID-Nr: 3330580b.pdf-- ! -- NOTE -- ! --5.5.1 TypeEHS NIMCO WK-200 or compatibleEquipment EHS DW / DWExtend of supplySingle lever control unit for FL with doubleactingbeam-cylinders and double-actingimplement cylinders.Items may depend from customer order-- ! -- NOTE -- ! --On special request partner solutions areavailable, implementing other joystick andbowden cable variants or combined valvestets.Please find reference information on partnerservice manual for technical details andservice parts informations which may variatefrom Stoll specifications.-- ! -- ATTENTION -- ! --To combine lift arm and tractor montedbracket sets from different build years withdifferent electric sockets the following kits areavailable:Stoll-ID 3447220 KIT EL. 2-pol > 7-polwith plug for liftarm side.Stoll-ID 3447230 KIT EL. 2-pol > 7-polwith 7-pol socket and adapter bracket fortractor side27

Later chapters (or Stoll document A1877 inKIT) showing all relevant electric harnessdiagramms for these alternatives. Pleaseallow only qualified service personal to dothese assembly work.5.5.2 Definition of working directions5.5.3 Definition of actuating directionsAll hydraulic functions can be operated with one handonly.The entire ROBUST-series can, as an option, beequipped with the single lever control for thefrontloader. High comfort of operation, simple but alsoprecise and safe control of the loader arm – all thisunited in a single handy lever. The unit consists of thecontrol lever in the cab and the control valve with itsBowden cables fitted outside to the frontloadermounting. The four hydraulic couplings of the controlvalve are situated in line which has severaladvantages: The valve can be kept flat, it takes littleroom and it doesn’t obstruct view to the front axle.5 Grundfunktionen:A frontloader - liftB frontloader - lowerC attachment - scoopD attachment - dischargeS frontloader - floating position3 combined functions:A-D lift + dischargeB-C lower + fillB-D lower + discharge28

-- ! -- NOTE -- ! --Combined functions are not possible with HDPloaders!With HD or HDPM Loaders only limited, we cannot proceed two “pressure-functions” at thesame time!5.5.4 Additional functions joystick buttonsTwo electric switches are integrated into thecontrol lever which, according to the hydraulicequip-ment of the frontloader, actuates thefollowing functions:>> To operate 3rd service rams in tools (such assilage forks, bale forks etc)Robust F HDPM Loader - Button 1:Robust F HDPM Loader - Button 2:Robust F HD Loader - Button 1:Robust F HD Loader - Button 2:3rd Auxiliary circuit4th Auxiliary circuit3rd Auxiliary circuit/Bucket Rapid Discharge function4th Auxiliary circuit.Robust F HDP Loader - Button 1:Robust F HDP Loader - Button 2:Robust F HDP Loader - Button (3):Suspend Bucket Self Levelling action>> for optimized handling and filling with loosebulk cargo3rd Auxiliary circuit/Bucket Rapid Discharge function.4th Auxiliary circuit>> additional button(3) will be delivered only withcustomer order-- ! -- NOTE -- ! --For HYDRO-LOCK option (hydraulic implementlock) there is a seperate switch box in delivery.-- ▲ -- DANGER -- ▲ --ACHTUNG: NEVER use any free joystickbutton for HYDRO-LOCK function !29

5.6 Quick installation and removal ofattachments-- ▲ -- CAUTION -- ▲ --The loader arm/loader unit may only beinstalled and removed by the operator.Pick-up of implements1. Tilt the quick-change frame approximately15 degrees forwards by means of thehydraulic implement control (Fig. LHO1011A).2. Pull out the handle for the sliding pin on theleft hand side of the quick change frame. Turnhandle to the right until the bushing bottomsagainst the lower end of the slotted hole. Thiswill prevent the handle sliding back out of itsunlocked position (Fig. LHO1011A).3. Drive tractor and loader beam with shaftunder the implement hooks and raise indirection F, until the shaft fully contacts thehooks. The attachment will swivel with the lugsinto the quick-installation frame (Fig.LHO1011A).4. Tilt the quick-change frame backwards untilthe sliding pins engage in the lugs (Fig.LHO1012A). The implement is now rigidlyconnected to quick-attachment frame andloader beam.30

-- ! -- ATTENTION -- ! --Before any use of the front loader, make avisual check to be sure that the pins of thelocking bar are in position and the tool iscorrectly and safely secured to the loaderarm (fig. LHO1013A).5. After taking up the implement, adjust thevisual indicator in such a way that the top endsof guide tube (2) and connecting rod (1) stayflush if the implement is horizontal. The guidetube can be adjusted by moving the clip (3) onthe cylinder barrel.....Removing the tools is a reversal of themounting procedure.5.7 Hydraulic implement control-- ! -- ATTENTION -- ! --Shown decal at hydraulic cylinder ofhydraulic implement lock marks the open(inner) and locked (outer) position ofhydraulic implement lock.31

-- ▲ -- DANGER -- ▲ --Before any use of the front loader, make avisual check to be sure that the Switch isin position and safely secured to theloader arm.Advantages of work with hydraulicimplement control1. Tipping the bucket at ground levelconsiderably increases the break-out force,the material to be loaded is loosened from thesubsoil and the loading process is facilitatedand speeded up.2. Optimal filling of the bucket by correctpositioning at ground level3. Precisely graduated discharge through steplesstipping and tilting of the bucket - bestutilisation of the load space available.4.A jolting facility eases emptying the toolwhen handling sticky material.Hydraulic operation of the tool (i.e. variation ofits tilt) is controlled by a synchronous hydrauliccylinder which forms an integral part of therods for the parallel motion.Synchronous cylinders include an additionalconnecting rod (1) in the rear chamber (see"a" in fig. LHO1015A ). The resulting decreaseof the chamber volume reduces the requiredoil quantity, thus speeding up tipping of thetool (= unloading).32

-- ! -- ATTENTION -- ! --Both cylinder chambers are protectedagainst overload by pressure relief valves(see piping diagrams of the hydraulicsystem). If overload occurs thecorresponding pressure relief valveresponds causing the tool to tip down.-- ! -- ATTENTION -- ! --To dump the load set the control unit to"dumping" and increase the engine speedto such an extent that sufficient oil is fedfrom the tractor hydraulics to the"dumping" side of the tool cylinder.When using a four-position control unit, neverleave the hydraulic system in floating positionwhen dumping.If these instructions are not observed, avacuum max form in the tool operatingcylinders which will involve "hunting" of thetool during the next working cycle.33

5.8 Hydraulic diagramm HDPMHDPM (standard – basic version)A LiftarmB AttachmentHydraulik diagramRobust F HDPM1 lowering2 Lifting3 Pouring4 Scooping34

5.9 Mechanical parallel motionIf the arm is lifted or lowered, the tool iscontrolled by the guide rods in such a waythat it describes an parallel movement overthe whole lifting range.The bottom part of the guide rods for themechanical parallel movement is formed bythe synchronous cylinders located at the toolside.The horizontal tool position can easily bechecked at every stage of the lifting cyclethanks to the standard visual indicator.With fully lowered arm the tool can be tippedupwards up to an angle of abt. 45°.During the subsequent lifting this angledecreases slightly which can easily becompensated by retracting the tool cylindersagain.-- ▲ -- CAUTION -- ▲ --When traveling on roads, doingmaintenance or when loader is detachedthe safety locking of control lever (Z)have to be moved to the blockedposition, or the required hydraulic valve(shut-off valve or Hydro-Fix) should beclosed.35

5.10 3rd and 4th control circuitTools with integral hydraulic cylinders such assilage crocodile fork or bale grabs can beoperated via a 3rd or 4th control circuit evenif your tractor does not include an additionaldouble acting control unit. Change-over fromthe 2nd control circuit (tool operation) to a3rd or 4th control circuit is by means of pushbutton S1 (S2) which acts on an electricallyoperated hydraulic valve (solenoid valve).If the push buttons S1 or S2 are notoperated, the control lever can be used to tipthe tool up and down.Operating at the same time the control leverand one of the push buttons S1 or S2 willfeed hydraulic pressure to the respective toolcylinder.36

5.11 Hydraulic diagramm HDPMHDPM with 3rd control circuitHydraulic diagram Robust F HDPMA LiftarmB AttachmentC 3. Control serviceZ Ignition1 lowering2 Lifting3 Pouring4 Scooping37

5.12 Hydraulic diagramm 3rd and 4thcontrol circuitHDPM (full equipped version)A LiftarmB AttachmentC 3. Control serviceD 4. Control serviceW hydraulic attachment lockZ IgnitionHydraulik diagram Robust F HDPMS3 3rd Control service onS4 4th Control service onSW hydraulic attachment lock off1 lowering2 Lifting3 Pouring4 Scooping38

5.13 Electrical Equipment HDPM5.13.1 HDPM with 3rd and 4th control wiringversion with 2-pole socket39

5.13.2 HDPM with 3rd and 4th control wiringversion with 7-pole socket40

6. Ballasting the tractor during frontloader operationTo ensure operational and road traffic safetyit is necessary to equip the tractor with anadditional weight at the rear hydraulic linkage.Steerability must thereby not be detrimentallyaffected and it is also necessary to make surethe minimum braking efficiency is notaffected, even during front loader operation.Do not overload the tractor by selecting tooheavy a ballast weight.Remove all front ballast weights from thetractor before setting the frontloader to work.The values listed in the following table mustnot be exceeded.tractorkW (HP)30 - 56(40 - 75)44 – 70(60 - 95)> 59(> 80)loadersize4 HD5 HD8 HD/HDPmax. ballast weight at adistance of 1.1 m in frontof the rear axle centre line300 – 400 kg10/15 HD/HDP 600 – 700 kg30/31 HD/HDP35/36 HD/HDP50/51 HD/HDP700 – 800 kgtractorkW (HP)30 – 45(40 – 60)30 – 51(40 – 70)37 – 56(50 – 75)44 – 70(60 – 95)52 – 70(70 – 95)59 – 89(80 – 120)66 – 96(90 – 130)89 – 126(120 – 170)103 – 185(140 – 250)loadersize4 HDPM5 HDPM8 HDPM10 HDPM15 HDPM30/31HDPM35/36 HDPM50/51 HDPM71 HDPMmax. ballast weight at adistance of 1.1 m in frontof the rear axle centre line300 – 400 kg600 – 700 kg700 – 800 kg41

7. Service and maintenance-- ▲ -- DANGER -- ▲ --Liquids leaking under high pressure (Dieselfuel, hydraulic oil) can penetrate the skinand cause severe injury. When injured seea doctor immediately!Danger of infection!-- ▲ -- DANGER -- ▲ --Never carry out repair, cleaning orlubricating jobs with raised load beam!Lower or remove beam. Lower load beamafter completion of work.The instructions and guidelines published bythe tractor manufacturer apply to the serviceand maintenance of the hydraulic system.Scrupulous cleanliness is essential whenworking on the hydraulic system. Use of cleanhydraulic oil is imperative and necessary forthe troublefree function of the hydraulicsystem.-- ▲ -- CAUTION -- ▲ --Grease loader beam, implement andhydraulic ram bearings and pivots all 20operating hours. Previously relieve load onthe bearings.We recommend suspension of a ballast weightfrom the three-point linkage during front loaderoperation, even on four-wheel drive tractors.42

-- ▲ -- CAUTION -- ▲ --It is very important to retighten all fasteningbolts after 5 operating hours! Check allbolted connections for tightness after afurther 100 operating hours and retightenas necessary.(Non-adherence to this recommendation cancause damage to tractor and loader, resultingfrom setting of the bolted connections, due tothe intermittent additional forces generated bythe loader operation vibrations).-- ▲ -- DANGER -- ▲ --Before starting maintenance work, makesure you are wearing the personalprotections (protective overalls, gloves,goggles, protective footwear, etc.).-- ▲ -- CAUTION -- ▲ --Never perform maintenance with the armsraisedAvoid carrying out maintenance operations iflighting is insufficient.Only carry out maintenace if the machine is ata temperature of below 55°CIf normal maintenance of the tractor is to beperformed, disconnect the loader so as toallow safe access to the parts to be checked,replaced or adjusted.Maintenance of the loader must be carried outwhen the loader is connected to the machine.43

Before performing maintenance operations onthe loader, clean it carefully and, if necessary,wash the parts to be lubricated (greasingnipples); this applies above all when carryingout controls on the hydraulic circuit.Before inspecting the hydraulic equipment andconnections, drain residual pressurecompletelyThis section indicates the timing andoperations that relate to the loader; for thoserelating to the machine, please refer to thespecific user manualThe timing indicated is valid for normal use; ifthe loader is subjected to severe use, the timebetween maintenance operations should bereduced.The intervention times are indicated in actualworking hours of the machine complete withloader.The oil level in the gearbox must be checkedon a flat surface, with the bucket or otherimplement resting on the ground.-- ▲ -- IMPORTANT -- ▲ --According legal requirements related to loaderapplication on public roads, owner and/or userof frontloader are responsible of regularleakage checks on single lever valve, hosesand and lift cylinders.Your qualified service partner will find thelimiting values in STOLL loader servicemanual.Same regular based checks have to beapplied on mechanical locking system of singlelever joystick !-- ! -- NOTE -- ! --Please follow Stoll service training manual A1676 for details on maintenance work!-- ▲ -- WARNING -- ▲ --Any usage or transport of loader isprohibited, if any of above safety lockingdevices has been deactivated or ifmeasured resulting internal and externalleakage values will exceed limit value classmentioned above.44

8. Safety and Prevention of Accidents8.1 Driving on public roadsThe following applies to travel on publicstreets:The horizontal distance between the frontedge of the front loader and the centre of thesteering wheel must not exceed 3.5 m. Thefront loader bucket or fork may have to beremoved if necessary.The front-loader-beam must be raised in anadequate position, thus detrimentally affectingthe tractor-drivers field of view as little aspossible and also in order to ensure, that theforward edge of the implement is at aminimum height of 2 m above ground level.-- ▲ -- CAUTION -- ▲ --Before any travel on public roads be surethat the locking lever of the single-levercontrol unit is moved to locking position.When travelling on the road with the frontloader lifted, the control lever must belocked against lowering. If the tractor isfitted with a single-lever control unit, besure that the locking lever is in the lockingposition-- ▲ -- DANGER -- ▲ --Travel with loaded bucket on public streetsis prohibited!45

8.2 Allowed maximun load capacity ofpallet fork tinesThe allowed maximal values of load-bearingcapacity per pallet fork tine (scheme) need notto be passed.Maximal allowed lifting hight for throughoutpay load N 2 by observance of the maximaldistance of 450 mm.TypePay load N 2 [kg] Overloadingwithout attachment height (mm)Robust F 5 876 3246Robust F 8 1310 3246Robust F 10/15 1350/1700 3545Robust F 30/31 1570 3874Robust F 35/36 1800 3874Robust F 50 2400 4052Robust 71 2200 44368.3 Comfort - DrivePlease observe the following instructions ifyour frontloader is fitted with a Comfort Drivesystem:1. Preferably switch on the Comfort Drivesystem when travelling on the road or duringlong travel on bumpy ways (shut-off tap mustbe opened).Any shockload transmitted by the frontloaderarm will then considerably be damped by"Comfort-Drive".-- ! -- ATTENTION -- ! --2. Before performing any heavy loading work,e.g. earth moving, the shut-off tap locatedbetween the LIFTING side of the loader armcylinders and the respective “Comfort Drive”pressure accumulator must be closed.46

If the front loader is used under maximum loadwith the shut-off tap not closed, the constantlyalternating stress and the resulting peakpressures could be detrimental to thediaphragm of the pressure accumulator.-- ! -- ATTENTION -- ! --If the shut-off tap is not closed, the peakpressures can lead to the destruction of thediaphragm.What is more, a certain "hunting" effect couldbe originated by the pressure accumulator.The shut-off tap of the Comfort Drive systemshould also be closed before the use of apallet fork to preclude a possible "hunting"effect when pallets are taken up or put down.1) Gas pressure inside the accumulators 4) Pressure fluctuations caused by roadtravelling.2) elastic diaphragm 5) to the trcator control valve3) Shut-off tap open47

9. Decalcomania9.1 Decalcomania frontend loaderRobust F "right"(=> 2007)3435500a & 3435620a3343590a3341782bEN.pdfelecro-hydraulic attachment lockmechanical attachment lockDecals (english)48

9.2 Decalcomania frontend loaderRobust F "left"(=> 2007)3341782bEN.pdfDecals (english)49

9.3 Decalcomania frontend loaderRobust F "right"(2007 =>)3435500 & 3435620a Elektro-Hydr. Werkzeugverriegelung3343590a Mechan. Werkzeugverriegelung50

9.4 Decalcomania frontend loaderRobust F "left"(2007 =>)3431570c.pdf3432020c.pdf3432010c.pdfGrey-RedAnthracite-RedGrey-Yellow51

10. TroubleshootingDescription of malfunction Cause Trouble Shootinga) Small lift and tearout Force. Insufficient oil pressure. Check the tractor hydraulic.b) Control lever difficult to operate. Bowden cables hardly to operate.Check routing and movability of the bowden cables.If necessary oil or replace bowden cables.1) Insufficient oil in the hydraulic system. Check Oil level and refill oil if necessary.c) Loader and attachment move slowly or not atall.d) Loader and/or attachment operate in wrongdirection relative to control lever.2) Hydro-couplers connection incorrect. Check and correct couplers.3) Defect hydro-coupler. Check coupler and replace if necessary.4) Insufficient oil flow. Check the tractor hydraulic.5) Pressure relief valve of the loader sticks inposition open.Check system pressure.1) Couplers connected incorrectly. Check and correct couplers.2) Bowden cables connected incorrectly Check and correct bowden cables connection.1) Insufficient oil in hydraulic system. Check Oil level and refill oil if necessary.2) Engine R.P.M. to slow. Increase engine speed.3) Cold hydraulic fluid.Allow hydraulic system to warm up to operatingtemperature.e) Slow speed or sticking lift function of theloader.4) Load to high. Reduce load.5) Defect hydro-coupler. Check coupler and replace if necessary.6) Internal leakage of hydraulic cylinder.Check cylinder, replace defect cylinder ifnecessary.7) Pressure relief valve incorrect adjusted. Check setting of the pressure relief valve.8) Internal leakage of control valve. Check control valve, replace if necessary.f) Insufficient lift power.1) Internal leakage in hydraulic cylinder.Check cylinder, replace defect cylinder ifnecessary.2) Load to high. Reduce load.3) Pressure relief valve setting incorrect. Check setting of the pressure relief valve.4) Internal leakage of control valve. Check control valve, replace if necessary.g) Air in the hydraulic system. (Indicated byfoamy fluid.)1) Hydraulic pump sucks air.Check lines between hydraulic pump and tank forloose or defect connections.2) Hydraulic filters are dirty Check hydraulic filters and replace if necessary.Clean the coupler and replace as required.h) Leaking couplers of the loader or 3 rd or 4 thcontrol circuit.Leakage by penetrated dirt.When not using the loader and/or the 3 rd and 4 thcontrol circuit lock the couplers with protectivecaps and keep the cover of the Hydro-Fix closed.i) Loader arm or attachment is locking after acertain lifting movement.j) Attachment is tilting to the rear.1) The coupling is not completely closed. Check the hydro-coupler.2) The coupling is defect. The defect coupling half must be replaced.1) Relief valves misadjusted or defect. Examine relief valves, if necessary exchange.2) Handling error: Engine speed too small. Increase engine speed.52

DE EG-Konformitätserklärung ES CEE Declaración de Conformidadentsprechend der EG-Richtlinie 98/37/EEC, 04/108/EEC, 97/23/EEC según la normativa de la 98/37/EEC, 04/108/EEC, 97/23/EECEN EC-Declaration of Conformity PT Declaração de conformidadeaccording to Directive 98/37/EEC, 04/108/EEC, 97/23/EEC conforme a norma da C.E.E. 98/37/EEC, 04/108/EEC, 97/23/EECIT Dichiarazione CE di Conformità DA EF-overensstemmelseserklæringai sensi della direttiva 98/37/EEC, 04/108/EEC, 97/23/EEC i henhold til EF-direktiv 98/37/EEC, 04/108/EEC, 97/23/EECNL EG-Verklaring van conformiteit PL Deklaracja Zgodności CEovereenstemming met Machinerichtlijn 98/37/EEC, 04/108/EEC, 97/23/EEC wedlug Dyrektywy Maszynowej 98/37/EEC, 04/108/EEC, 97/23/EECFR Déclaration de conformité pour la CEE FI EY : N Vaatimustenmukaisuusilmoitusconforme à la directive de la 98/37/EEC, 04/108/EEC, 97/23/EEC täyttää EY direktiivin 98/37/EEC, 04/108/EEC, 97/23/EECDEENITWir,We,Noi,NL Wij, Wilhelm Stoll Maschinenfabrik GmbHFR Nous, Bahnhofstr. 21ES Vi, 38268 LengedePT Me, GermanyDAPLFIVi,Nosotros,Nós,DE erklären in alleiniger Verantwortung, daß das Produkt: ES declaramos bajo resposibilidad propia que el producto:EN declare under our sole responsibility, that the product: PT declaramos com responsabilidade próqria que o produto:IT Dichiara sotto la propria responsabilità che il prodotto: DA erklærer på eget ansvar, at produktet:NL verklaren als enig verantwoordelijken,dat het product: PL deklarujemy z pelną odpowiedzialnością, iŜ produkt:FR déclarons sous notre seule responsabilité que le produit: FI ilmoitamme yksin vastaavamme, että tuote:DE Typ : FrontladerEN model : Front Loader HD 5 / 8 / 10 / 15 / 30 (31) / 35 (36) / 50 (51)IT modello : Caricatore FrontaleNL type : FrontladerFR modèle : Chargeur Frontal HDP 8 / 10 / 15 / 30 (31) / 35 (36) / 50 (51)ES modelo : Cargadora FrontalPT marca : Carregador FrontalDA typ : Frontlæsser HDPM 4/ 5 / 8 / 10 / 15 / 30 (31) / 35 (36) / 50 (51) / 71PL Model : Ładowacz czołowyFI merkki : Etukuormaimen käyttöohjekirjaDENummer:EN number : 3 3 1 2 1 2 0 xx F x x NS xF Ax Cx xxIT numero :NL nummer :FR numéro : 3 3 1 2 1 3 0 xx F x x HS xF Ax Cx xxES número :PT número :DA nummer : 3 3 1 2 1 4 0 xx F x x MS xF Ax Cx xxPL o numerze :FI numero :DEENITauf das sich diese Erklärung bezieht, den einschlägigengrundlegenden Sicherheits- und Gesundheitsanforderungender EG-Richtlinie entspricht:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005to which this declaration relates corresponds to the relevant basicsafety and health requirements of the Directive:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005E' Conforme ai Requisiti Essenziali di Sicurezza a di tutela dellaSalute di cui alla Direttiva e sue successive modificazioni:ESPTDAal cual se refiere la presente declaración corresponde a lasexigencias básicas de la normativa de la y referentes a laseguridad y a la sanidad:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005a que se refere esta declaração corresponde às exigenciasfundamentais respectivas à segurança e à saúde de norma daC.E.E.:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005som er omfattet af denne erklæring, overholder de relevantegrundlæggende sikkerheds- og sundhedskrav i EF-direktiv sam:NLFREN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005waarop deze verklaring betrekking heeft voldoet aan de vantoepassing zijnde fundamentele eisen inzake veiligheiden gezondheid van de EG-machinerichtlijn no:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005faisant l'objet de la déclaration est conforme aux prescriptionsfondamentales en matière de sécurité et de santé stipulées dansla Directive de la:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005PLFIEN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005dla którego się ta deklaracja odnosi, odpowiada właściwympodstawowym wymogom bezpieczeństwa i ochrony zdrowiaDyrektywy Maszynowej:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005johon tämä ilmoitus liittyy, vastaa EY direktiivissä mainitujaperusturvallisuus- ja terveysvaatimuksia (soveltuvin osin) sekämuita siihen kuuluvia EY direktiivejä:EN 12525:2000+EN 12525/A1:2006, EN 12100-1:2003, EN 12100-2:2003, EN 982:1996, ISO 23206:2005Lengede, 15.02.2007 i.A. Uwe OckertKonstruktion (Loader Design)Lengede, 15.02.2007 i. V. Frank SchmelzerProduktionsleiter (Loader Manufacturing)53

SparepartsTel.: 0 53 44 / 20 1 43Telefax: +49 53 44 / 20 183E-mail: EA@stoll-jf.deWilhelm STOLLMaschinenfabrik GmbHPostfach 3, 38266 LengedeBahnhofstr. 21, 38268 LengedeTelefon generally - +49 53 44 / 20-0Telefax Spareparts - +49 53 44 / 20 183Telefax Marketing - +49 53 44 / 20 182E-mail generally - box@stoll-jf.deE-mail Marketing - vkf@stoll-jf.deP1360_EN07MT04.PDF